397511123 has 2 divisors, whose sum is σ = 397511124. Its totient is φ = 397511122.

The previous prime is 397511071. The next prime is 397511137. The reversal of 397511123 is 321115793.

It is a strong prime.

It is an emirp because it is prime and its reverse (321115793) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397511123 is a prime.

It is a super-2 number, since 2×397511123² = 316030185817442258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397511123.

It is not a weakly prime, because it can be changed into another prime (397511623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198755561 + 198755562.

It is an arithmetic number, because the mean of its divisors is an integer number (198755562).

Almost surely, 2^397511123 is an apocalyptic number.

397511123 is a deficient number, since it is larger than the sum of its proper divisors (1).

397511123 is an equidigital number, since it uses as much as digits as its factorization.

397511123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 32.

The square root of 397511123 is about 19937.6809835046. The cubic root of 397511123 is about 735.2749356312.

The spelling of 397511123 in words is "three hundred ninety-seven million, five hundred eleven thousand, one hundred twenty-three".